New York (LGA) to Denver (DEN) flights

United Airlines, Southwest Airlines, Delta Air Lines fly nonstop from LaGuardia Airport to Denver International Airport, with about 82 flights a week in July 2026. The 1,620-mile flight takes about 4h 23m gate to gate.

From

LGA

New York

LaGuardia Airport

DEN

Denver

Denver International Airport

Distance: 1,620 mi · 2,607 km
Flight time: 4h 23m
Airlines: 3
Seats filled: 87%

Flights a week, July 2026

4,499 flights and 642,424 passengers in 12 months

Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying LGA to DEN

Airline	Flights a week	Aircraft	Passengers (12 months)	Flight time
United Airlines	37	Boeing 737 MAX 8, Airbus A321, Boeing 737-800	299,512	4h 25m
Southwest Airlines	29	Boeing 737 MAX 8, Boeing 737-700 / MAX 7, Boeing 737-800	203,642	4h 20m
Delta Air Lines	17	Boeing 737-800, Airbus A220-300, Airbus A220-100	120,400	4h 26m
Frontier AirlinesSeasonal or ended	n/a	Airbus A320neo, Airbus A321, Airbus A320-100/200	18,870	4h 5m

Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.

LGA to DEN flight schedule

18 flight numbers flew this route in August 2026, 10 of them almost daily. The first usually leaves at 6:30am and the last at 9:05pm. Times are local and can change; check with the airline before you book.

Flight	Departs	Arrives	Days flown in August 2026	On time (12 months)
WN 561Southwest Airlines	6:30am	8:40am	12	83%
WN 2401Southwest Airlines	6:55am	9:05am	16	94%
UA 2154United Airlines	7:40am	9:55am	8	68%
UA 2128United Airlines	7:45am	10:02am	21	86%
DL 751Delta Air Lines	7:50am	9:58am	31	82%
UA 716United Airlines	10:00am	12:22pm	24	94%
WN 468Southwest Airlines	10:20am	12:30pm	12	17%
UA 2200United Airlines	12:34pm	2:55pm	31	86%
DL 716Delta Air Lines	1:55pm	4:14pm	31	70%
WN 2403Southwest Airlines	2:05pm	4:15pm	24	27%
UA 1729United Airlines	3:29pm	5:57pm	31	59%
WN 223Southwest Airlines	3:55pm	6:20pm	14	23%
UA 2834United Airlines	4:59pm	7:27pm	28	58%
WN 309Southwest Airlines	5:30pm	7:55pm	12	n/a
DL 710Delta Air Lines	6:05pm	8:51pm	26	58%
UA 2046United Airlines	6:29pm	8:55pm	26	67%
WN 2404Southwest Airlines	8:55pm	11:10pm	12	46%
WN 4240Southwest Airlines	9:05pm	11:15pm	16	8%

Is LGA to DEN on time?

From September 2025 to August 2026, 70% of 4,663 flights arrived within 15 minutes of schedule and 3.3% were cancelled. Flights leaving around 12pm were the most punctual (86%), those around 4pm the least (57%). Most delay time was caused by late-arriving aircraft (38%).

Airline	Flights	On time	Average delay	Cancelled
United Airlines	2,021	78%	19 min	2.1%
Southwest Airlines	1,516	59%	27 min	4%
Delta Air Lines	1,033	71%	21 min	4.5%
Frontier Airlines	93	68%	39 min	3.2%

Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.

On-time arrivals by departure time

Scheduled departure	Flights	On time
6am to 7am	225	85%
7am to 8am	778	85%
10am to 11am	402	82%
11am to 12pm	99	63%
12pm to 1pm	388	86%
1pm to 2pm	149	69%
2pm to 3pm	488	60%
3pm to 4pm	388	69%
4pm to 5pm	568	57%
5pm to 6pm	148	49%
6pm to 7pm	580	62%
8pm to 9pm	126	36%

Flights by month

Month	Flights	Passengers
August 2025	396	59,315
September 2025	395	55,929
October 2025	391	57,415
November 2025	353	50,720
December 2025	372	56,646
January 2026	368	48,131
February 2026	316	41,928
March 2026	379	50,940
April 2026	394	49,832
May 2026	390	55,855
June 2026	380	57,725
July 2026	365	57,988

Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.